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Ahab / f*ck imgur

// ==UserScript==
// @name        f*ck imgur
// @version     0.3
// @match       *://*/*
// @run-at      document-start
// @grant       none
// @updateURL   https://openuserjs.org/meta/Ahab/fck_imgur.meta.js
// @downloadURL https://openuserjs.org/install/Ahab/fck_imgur.user.js
// @license     MIT
// @author      Ahab [1735214]
// ==/UserScript==


const ddg = 'https://proxy.duckduckgo.com/iu/?u='

if(window.location.href.includes('i.imgur') && !(window.location.href.includes('proxy.duckduckgo'))){
    window.location = ddg+window.location.href
}

function processElement(el){
    if(el.tagName === 'IMG'){
        const src = el.getAttribute('src');
        if(src && src.includes('i.imgur') && !src.includes('proxy.duckduckgo')){
            el.setAttribute('src', ddg + src);
            const link = el.closest('a');
            if(link){
                const href = link.getAttribute('href');
                if(href && href.includes('i.imgur') && !href.includes('proxy.duckduckgo')){
                    link.setAttribute('href', ddg + href);
                }
            }
        }
    }
    if(el.tagName === 'A'){
        const href = el.getAttribute('href');
        const regex = /^(?:https?:\/\/)?(?:www\.)?imgur\.com\/([A-Za-z0-9]{5,})$/;
        const match = regex.exec(href);
        if(href && href.includes('i.imgur') && !href.includes('proxy.duckduckgo')){
            el.setAttribute('href', ddg + href);
        }
        if(href && match && !href.includes('proxy.duckduckgo')){
            const url = ddg + `https://i.imgur.com/${match[1]}.png`;
            el.setAttribute('href', url);
        }
    }
    if (el.nodeType === 1) {
        const bg = window.getComputedStyle(el).backgroundImage
        if (bg && bg.includes('imgur') && !bg.includes('proxy.duckduckgo')) {
            const originalUrl = bg.replace(/^url\(["']?/, '').replace(/["']?\)$/, '')
            const newUrl = `url("${ddg}${originalUrl}")`
            el.style.backgroundImage = newUrl;
        }
    }
}

const observer = new MutationObserver(mutations => {
    mutations.forEach(m => {
        if (m.type === 'childList'){
            m.addedNodes.forEach(node => {
                if(node.nodeType === 1){
                    if(node.tagName === 'IMG' || node.tagName === 'A'){
                        processElement(node);
                    }
                    node.querySelectorAll && node.querySelectorAll('img, a, [style*="background-image"]').forEach(processElement);
                }
            });
        }
    });
});

observer.observe(document.documentElement, { childList: true, subtree: true });